Actually Welcome to the Concept of the Genes.
Basically a Polygenetic trait is controlled by two or more genes.
Examples of human polygenic inheritance are height, skin color, eye color and weight. Polygenes exist in other organisms, as well.
Answer:
A, C, D
Explanation:
It is easier to look for which is wrong rather than checking all if they are right.
B is wrong because population A is growing exponentially and it can be inferred from the graph that it is nowhere near slowing down.
Answer:
Some variation is the result of differences in the surroundings, or what an individual does. This is called environmental variation.
<span>Crop
is the part of the digestive system you would see in a cross-section anterior
to the gizzard in a worm. Crop is a thin wall organ that acts as a temporary food
storage chamber. The esophagus leads to the crop and the organ next to it is
the gizzard which serves as the food grinding chamber.</span>
